diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index afd9e2f552..2db84a46ee 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -469,12 +469,7 @@ SDKPATHINSTALL = "/usr/local/${SDK_NAME_PREFIX}-${SDK_ARCH}"
 # Kernel info.
 ##################################################################
 
-OLDEST_KERNEL = "3.2.0"
-OLDEST_KERNEL:aarch64 = "3.14"
-OLDEST_KERNEL:nios2 = "3.19"
-OLDEST_KERNEL:powerpc64le = "3.10.0"
-OLDEST_KERNEL:riscv32 = "5.4"
-OLDEST_KERNEL:riscv64 = "4.15"
+OLDEST_KERNEL = "5.15"
 
 # SDK_OLDEST_KERNEL can't be set using overrides since there are
 # none for the SDK architecture. Best to set it from a machine-sdk